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Finding the Fourth Proportional to 21,903.40, 32,858.34 and 8,755.48

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Solution

The fourth proportional to 21,903.40, 32,858.34 and 8,755.48 is: 13,134.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.40 : 32,858.34 = 8,755.48 : x
  2. Step 2: Convert to fraction form
    21,903.40/32,858.34 = 8,755.48/x
  3. Step 3: Cross multiply
    21,903.40x = 32,858.34 × 8,755.48
  4. Step 4: Simplify right side
    21,903.40x = 287,690,538.70
  5. Step 5: Solve for x
    x = 287,690,538.70/21,903.40
  6. Step 6: Final answer
    x = 13,134.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.